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Position of operative ports in order of placement: (1) optical port, 14 cm below the xiphoid process; (2) left working port, below the left costal margin in the mid-clavicular line; (3) epigastric port for the Nathanson retractor; (4) right working port, below the right costal margin in the mid-clavicular line; (5) assisting port, on the left anterior axillary line at the level of the optical port.
